The value of:
$[25 +8 ÷2 - \{16 + (14\, of\, 7 ÷14) - (18 ÷ 12 \, of\, \frac{1}{2})\}] =?$
Answer & explanation
Correct answer: option 3
$[25 +8 ÷2 - \{16 + (14\, of\, 7 ÷14) - (18 ÷ 12 \, of\, \frac{1}{2})\}] $
= [25 + 8 ÷ 2 - {16 + (98 ÷ 14) - (18 ÷ 6)}]
= [25 + 4 - {16 + 7 - 3}]
= 25 + 4 - 20
= 9